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What are some common skin diseases of the scalp?

A:

Quick Answer

Common scalp skin diseases include seborrheic dermatitis, lichen planus and ringworm, according to WebMD. Seborrheic dermatitis, or seborrhea, is characterized by a red, itchy rash and flaking skin.

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It is possible for seborrheic dermatitis to appear in many areas of the body, but on the head, it often shows up as adult dandruff or infant cradle cap, WebMD explains. In these cases, it is often controlled with over-the-counter shampoos. Flat-topped, purple or reddish bumps on the scalp are symptoms of lichen planus. Itchiness and temporary or permanent hair loss sometimes occur. Treatment typically consists of topical, injected or oral steroids.

A fungus causes ringworm, states MedlinePlus. Scalp injuries and infrequent hair washing increase the risk of the condition. It passes easily from person to person.

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